On December 12, Amnesty International is co-sponsoring an anti-Islamophobia rally in Brussels, Belgium. Combating bigotry against minorities—which is particularly prevalent in Europe against Muslims and Jews—is an honorable and pressing endeavor. Unfortunately, one of the keynote speakers at Amnesty’s event seems far more interested in stoking such hatred rather than fighting it.

Dyab Abou Jahjah is one of four individuals scheduled to speak at the rally. He has called the 9/11 attacks “sweet revenge,” said Europe made “the cult of the Holocaust and Jew-worshiping its alternative religion,” and labeled gays “AIDS-spreading faggots.” He has also questioned the existence of the Nazi gas chambers, and is a former fighter for the anti-Semitic group Hezbollah, an officially designated terrorist group by the U.S. and European Union. For his hateful activism, Abou Jahjah has been banned in the United Kingdom since 2009.

Viewed on its own, Amnesty’s sponsorship of Abou Jahjah would appear to simply be a case of insufficient vetting, the result of negligence rather than malice. But unfortunately, this is not an isolated incident.

In October, Amnesty drew sharp condemnation for sponsoring a U.S. speaking tour for activist Bassem Tamimi, who was revealed to be posting anti-Semitic material on Facebook. Last April, the organization was criticized after its membership rejected a resolution calling for Amnesty to combat anti-Semitism in Britain. Prior to that, Amnesty’s U.K. branch had failed to discipline a senior official who publicly equated Israel with ISIS.

At this point, then, it is worth asking whether the organization—whatever the merits of its other work—is a credible voice on anti-Jewish bigotry in Europe and the Middle East, or if it is becoming part of the problem.

Requests for comment from Amnesty were not returned as of this writing.